Natural Corks

Colmated Natural CorkA challenge for some winemakers is achieving a specific price point while maintaining the attractiveness of a natural cork closure. Colmated corks allow wineries to take advantage of the consumer preference for natural cork, while reaching lower price points competitive with synthetic stoppers and screw caps. "Colmate" means to fill or cover. For colmated corks, we use fine granular cork to fill voids and approve the appearance of a lower grade natural cork body. See how we makeColmated Corks.

Applications
Natural wine corks are preferred for all types of wine, aging periods and bottle formats. No other natural product offers this combination of visual appeal, neutrality and consistent sealing qualities.

Sizes, Grades and washes
Natural corks are offered in multiple standard lengths, visual grades and multiple washes. Custom sizes are also available on request.

Technical Specifications

Dimensional

Length: Nominal ± 1.0 mm

Diameter: Nominal ± 0.5 mm

Ovalisation: <1.0mm

Physical

Moisture: 4%-7% moisture content

Dimensional Recovery: >96%

Density: Nominal ± 40 Kg/m3

Resistance to boiling water: No disintegration

Functional

Extraction Force: 15 daN–45 daN (coated corks)

Sealing Ability: No leakage at 1.2 bar

Capillarity: <1 mm

Storage

Use before: 6 months

Storage humidity: 40% - 70% RH, non-condensing

Storage temperature: 15ºC - 20ºC, 59ºF - 68ºF

Location: Store in a clean, well ventilated, odourless place away from chlorine products.